The mission of Google-backed Calico is to harness advanced technologies to increase our understanding of the biology that controls lifespan. They then aim to use that knowledge to devise interventions that enable people to lead longer and healthier lives.

GERO focuses on the development of new treatments to combat the aging process and extend healthy human lifespans, primarily around the topic of stability and stress resistance of gene regulatory networks.

They were founded by billionaire John Sperling to discover anti-aging products and are trying to research ways to slow down aging. Their strategy focuses mostly on hormonal treatments and antioxidants.

They aim to discover the genetic basis of the aging process with the goal of increasing the healthy life span of humans and animals. Their strategy is largely based on caloric restriction and gene expression profiles.

Sierra Sciences is a biotechnology company whose long-term goal is to develop drugs and therapies that will cure and prevent human diseases associated with aging. Presently, they focus mainly on telomeres and telomerase.